Kang, Min-Sung Choi, Ho-Won Pramanik, Tanumoy Han, Sang-Wook Moon, Sung 2024-01-19T21:34:06Z 2024-01-19T21:34:06Z 2021-09-05 2018-10 1570-0755 https://pubs.kist.re.kr/handle/201004/120855 We suggest a universal quantum encryption scheme suitable for use in quantum signature. The verifier in a variety of quantum signature protocols usually checks for the falsification of the quantum signature state pair by using a swap test. However, these quantum signature protocols are not secure against existential forgery attacks; We prove that the universal quantum encryption scheme proposed in this paper is secure against this type of forgery because it uses the non-(anti)commutativity of an arbitrary unitary operator. In addition, we demonstrate its use in a quantum signature. Moreover, the optimization of this encryption in comparison with other encryption schemes is presented. English SPRINGER SCHEME Universal quantum encryption for quantum signature using the swap test Article 10.1007/s11128-018-2029-0 1 QUANTUM INFORMATION PROCESSING, v.17, no.10 QUANTUM INFORMATION PROCESSING 17 10 scie scopus 000442039800002 2-s2.0-85051723119 Quantum Science & Technology Physics, Multidisciplinary Physics, Mathematical Physics Article SCHEME Quantum cryptography Quantum signature Existential forgery Swap test Universal quantum encryption scheme